计算机工程 ›› 2011, Vol. 37 ›› Issue (10): 114-116.doi: 10.3969/j.issn.1000-3428.2011.10.038

• 安全技术 • 上一篇    下一篇

基于混沌序列的数字彩色图像加密算法

何松林   

  1. (昆明学院物理科学与技术系,昆明 650214)
  • 出版日期:2011-05-20 发布日期:2011-05-20
  • 作者简介:何松林(1964-),男,副教授、硕士,主研方向:非线性振动及混沌应用
  • 基金项目:
    2010年云南省教育厅科学研究基金资助项目(2010Y503)

Encryption Algorithm for Digital Color Image Based on Chaotic Sequences

何松林   

  1. (Department of Physics Science and Technology, Kunming University, Kunming 650214, China)
  • Online:2011-05-20 Published:2011-05-20

摘要: 提出用Logistic混沌序列产生多个加密矩阵与基色矩阵进行多次异或的方法,对彩色图像的RGB分量进行随机化处理,使加密后的图像均匀。由于混沌序列对参数和初始值的极端敏感性,即使加密算法被公开,没有正确的密钥也无法得到有用信息。因此采用多组分支参数和初始值作为密钥,使密钥长度有效增加。实验结果证明了该算法是有效的。

关键词: 混沌序列, 数字彩色图像, Logistic映射, 加密, 异或

Abstract: The new encryption algorithm for digital color image is proposed. The image can be encrypted through encryption matrixes generated with Logistic chaotic sequences to eXclusive OR(XOR) color matrixes many times. The R, G and B components of the color image can be treated randomly and encrypted image becomes more uniform. Because the chaotic sequences are extremely sensitive to the parameters and the initial values, even if the encryption algorithm is open. Without the right key, the useful information can not be got. The encryption key length is effectively enlarged by using multiple sets of parameter of the branch and initial value as the encryption key. The experiments confirm its validity.

Key words: chaotic sequence, digital color image, Logistic map, encryption, eXclusive OR(XOR)

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